package com.sky.controller.user;

import com.sky.result.Result;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.List;

@RestController("userDishController")
@RequestMapping("/user/dish")
@Slf4j
@Api(tags = "C端-菜品浏览接口")
public class DishController {

    @Autowired
    private DishService dishService;

    @Autowired
    private RedisTemplate redisTemplate;

    @GetMapping("/list")
    @ApiOperation("根据分类id查询菜品")
    public Result<List<DishVO>> list(Long categoryId) {
        log.info("根据分类id查询菜品, categoryId = {}", categoryId);

        // 在redis中查询菜品缓存数据
        String key = "dish_" + categoryId;
        List<DishVO> list = (List<DishVO>) redisTemplate.opsForValue().get(key);

        // 如果有数据，则直接返回
        if (list != null && !list.isEmpty()) {
            return Result.success(list);
        }

        // 如果没有数据，则查询数据库，然后加入到缓存中
        list = dishService.listWithFlavors(categoryId);
        redisTemplate.opsForValue().set(key, list);

        return Result.success(list);
    }

}
